Malicious PDF — malware analysis report

Static analysis result for SHA-256 3ae76f85c4ad2e6c…

MALICIOUS

PDF

33.3 KB Created: 2021-07-09 02:48:28 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-11-21
MD5: 7f7b6e57e665a7f5b342de1a3cbad8a8 SHA-1: 6ba2c1f1f0cc542366294216c312f0115575518a SHA-256: 3ae76f85c4ad2e6c2f4db7dd04960ffd79800594874c06cc55da5e4bb03cf455
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple links that redirect to malicious infrastructure, specifically promoting 'game hacks' and 'free generators' for popular games. The primary lure URL, http://netcdn.tw/app/1094591345/pokemon-go-free-yellow-egg-game-hack, is flagged as a known malicious redirector. While no scripts were explicitly extracted, the PDF structure and embedded URLs strongly suggest a social engineering tactic to drive users to potentially harmful websites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9980

Heuristics 4

  • PDF links to a 'free generator / game hack' redirector critical PDF_GAME_HACK_REDIRECT_LURE
    PDF's clickable action targets a redirector of the form /app/<id>/<slug>-game-hack — the landing-page shape of a large SEO 'free spins / generator / game hack' lure family that funnels victims through rotating disposable hosts to a malware/scam payload. The multi-link variants also trip ML/link-farm rules; this catches the single-link variants that otherwise score clean. CRITICAL on its own: the /app/<id>/<slug>-game-hack path shape is unambiguous scam infra, and the host rotates so a host-list match can't be relied on.
  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • Embedded URL info EMBEDDED_URL
    One or more URLs were extracted from the document. The URL itself is not a detection — see the per-URL labels for which channel (macro, JS, link annotation, document body, ...) reached each URL.
    URL http://netcdn.tw/app/1094591345/pokemon-go-free-yellow-egg-game-hack In PDF document text
    • https://www.xenonsvjetla.com/files/how-to-get-free-robux_GM431946152.pdfIn PDF document text
    • http://xenonsvjetla.com/files/roblox-building-games-free_GM431946152.pdfIn PDF document text
    • https://www.xenonsvjetla.com/files/cool-accessories-in-roblox-for-free_GM431946152.pdfIn PDF document text
    • https://www.xenonsvjetla.com/files/script-roblox-hack-pastebin_GM431946152.pdfIn PDF document text
    • https://www.xenonsvjetla.com/files/glitch-that-gets-u-free-robux_GM431946152.pdfIn PDF document text
    • https://www.xenonsvjetla.com/files/daily-coin-master-free-spins_GM406889139.pdfIn PDF document text
    • https://www.xenonsvjetla.com/files/rbx-place-free-robux_GM431946152.pdfIn PDF document text
    • http://xenonsvjetla.com/files/roblox-fly-hack_GM431946152.pdfIn PDF document text
    • http://xenonsvjetla.com/files/create-minecraft-server-free_GM479516143.pdfIn PDF document text
    • http://xenonsvjetla.com/files/roblox-hacked-accounts-list_GM431946152.pdfIn PDF document text
    • http://xenonsvjetla.com/files/coin-master-hack-ios-no-human-verification_GM406889139.pdfIn PDF document text
    • http://xenonsvjetla.com/files/how-to-get-free-robux-on-ios-no-verification_GM431946152.pdfIn PDF document text
    • http://xenonsvjetla.com/files/hack-all-game-roblox_GM431946152.pdfIn PDF document text
    • https://www.xenonsvjetla.com/files/get-free-cards-for-coin-master_GM406889139.pdfIn PDF document text
    • https://www.xenonsvjetla.com/files/40-free-spins-coin-master_GM406889139.pdfIn PDF document text
    • https://www.xenonsvjetla.com/files/free-sirt-maker-for-roblox_GM431946152.pdfIn PDF document text
    • https://www.xenonsvjetla.com/files/roblox-robux-generator-http-freerobuxgenerator-xyz_GM431946152.pdfIn PDF document text
    • http://xenonsvjetla.com/files/get-free-robux-com_GM431946152.pdfIn PDF document text
    • http://xenonsvjetla.com/files/coin-master-free-coins-today_GM406889139.pdfIn PDF document text
    • http://xenonsvjetla.com/files/roblox-money-cheats-xbox-one_GM431946152.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00002ba9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2BA9 22788 bytes
SHA-256: 63d545e7a79a6891009124ef4bf261b301d5ea42cf3c267ee5735a18441f2eca
font_01_sfnt_off00005e0f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5E0F 18756 bytes
SHA-256: b55b2ee2969ecb06d50cdec06f768bc42b15caab47febf921559f3e233eabb8f

Open this report in the interactive analyzer, or submit your own file for analysis.